/*
 * BaseMessageFactory.java    0.0.1    09/dic/2009
 * 
 * Copyright (c) 2009 mentalsmash.org
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * The use of the Apache License does not indicate that this project is
 * affiliated with the Apache Software Foundation.
 */ 
package org.mentalsmash.tazio.transparency.impl;

import java.io.Serializable;
import java.util.concurrent.atomic.AtomicLong;

import org.mentalsmash.tazio.commons.identifiers.NID;
import org.mentalsmash.tazio.transparency.commons.messages.TazioMessage;
import org.mentalsmash.tazio.transparency.commons.messages.TazioMessageID;
import org.mentalsmash.tazio.transparency.interfaces.MessageFactory;
import org.mentalsmash.tazio.transparency.interfaces.TransparencyMonitor;

import com.google.inject.Inject;
import com.google.inject.name.Named;

/**
 * This class is the base implementation for the {@link MessageFactory} interface.
 * 
 * @version 0.0.1	09/dic/2009
 * @author Enrico Savioli <savioli.enrico@gmail.com>
 */
public class BaseMessageFactory implements MessageFactory {

	/**
	 * The atomic long object used as the sequence number, it is initially set to 1 and 
	 * then retrieved and incremented at the creation of each {@link TazioMessage}.
	 */
	private AtomicLong sequenceNumber = new AtomicLong(1);
	private final NID id;
	private final TransparencyMonitor tester;
	
	@Inject
	public BaseMessageFactory(TransparencyMonitor tester, @Named("node_id") NID nodeID){
		this.tester = tester;
		this.id = nodeID;
	}
	
	/* (non-Javadoc)
	 * @see org.mentalsmash.tazio.transparency.MessageFactory#encapsulateMessage(java.io.Serializable)
	 */
	@Override
	public TazioMessage encapsulateMessage(Serializable payload) {
	
		tester.MessageFactory_encapsulateMessage();
		
		
		TazioMessageID messageID = new BaseTazioMessageID(sequenceNumber.getAndIncrement(), id);
		
		TazioMessage message = new BaseTazioMessage(messageID, payload);
		
		return message;
	}

}
